20000317 has 4 divisors (see below), whose sum is σ = 20869920. Its totient is φ = 19130716.

The previous prime is 20000311. The next prime is 20000327. The reversal of 20000317 is 71300002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000297 and 20000306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434767 + ... + 434812.

It is an arithmetic number, because the mean of its divisors is an integer number (5217480).

Almost surely, 2^20000317 is an apocalyptic number.

It is an amenable number.

20000317 is a deficient number, since it is larger than the sum of its proper divisors (869603).

20000317 is an equidigital number, since it uses as much as digits as its factorization.

20000317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869602.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 20000317 is about 4472.1713965366. The cubic root of 20000317 is about 271.4431957692.

Adding to 20000317 its reverse (71300002), we get a palindrome (91300319).

The spelling of 20000317 in words is "twenty million, three hundred seventeen", and thus it is an aban number.